Q. 75.0( 2 Votes )
How many terms of the sequence must be taken to make the sum ?
Sum of GP = 39 + 13√3
∴ Common Ratio = r =
a = √3
To find: Number of terms = n.
Sum of GP for n terms =
⇒ 26√3 = √3(3n - 1)
⇒ 27 = 3n
⇒ n = 3.
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